package com.sky.service.adminImpl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.IsExistException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.Objects;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        if (!DigestUtils.md5DigestAsHex(password.getBytes()).equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (Objects.equals(employee.getStatus(), StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void addEmployee(EmployeeDTO employeeDTO) {
        //拷贝到entity
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        //根据用户名查询数据库中的数据
        Employee username = employeeMapper.getByUsername(employee.getUsername());
        if (username!=null){
            throw new IsExistException(MessageConstant.ACCOUNT_EXIST);
        }
        //设置用户状态和默认密码
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        employeeMapper.addEmployee(employee);
    }

    @Override
    public PageResult<Employee> pageEmployee(EmployeePageQueryDTO employeePageQueryDTO) {
        PageResult<Employee> pageResult = new PageResult<>();
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> p=(Page<Employee>)  employeeMapper.pageEmployee(employeePageQueryDTO);;
        pageResult.setTotal(p.getTotal());
        pageResult.setRecords(p.getResult());
        return pageResult;
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.update(employee);

    }

    @Override
    public void editEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employeeMapper.update(employee);
    }

    @Override
    public Employee getEmployee(Long id) {
        Employee employee=employeeMapper.getById(id);
        if (employee==null){
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        return employee;
    }

}
